Triethylamine → HCID 57440680, compound

Participants

Reaction Conditions

Reaction Steps

Triethylamine (52 ml, 0.37 mol) was added to the amine from example 1 (31.3 g, 0.19 mol) in dichloromethane (400 ml) and reaction mixture stirred under an atmosphere of nitrogen gas at 0° C. for 10 minutes. Propionyl chloride (16.3 ml, 0.19 mol) was added and after stirring for 30 minutes, the reaction temperature was raised to room temperature for a further 5 hours. The reaction mixture was quenched 1 N HCl (aq) (100 ml) and then extracted with dichloromethane (2×50 ml). The organic fractions were combined, dried over anhydrous magnesium sulphate, filtered and concentrated in vacuo to give the title compound as a colourless oil that crystallised on standing to white crystals (28 g, 0.13 mol, 67%). 1H NMR (CDCl3, 400 MHz) δ: 1.18 (t, 3H), 2.22 (q, 2H), 2.51 (bs, 1H), 3.31 (m, 1H), 3.71 (dd, 1H), 3.80 (s, 3H), 4.81 (m, 1H), 5.95 (bs, 1H), 6.80 (d, 1H), 6.90 (d, 1H), 6.91 (s, 1H), 7.22 (t, 1H). LRMS: m/z 224. Mpt: 77-78° C. Analysis found C, 63.86; H, 7.82; N, 6.28%. C12H17NO3.0.1H2O requires C, 64.04; H, 7.70; N, 6.22%.

Provenance & Evidence